Drupal — Fatal error: Class 'Memcache' not found

Question

I have installed drupal on my localhost. It worked well 2 months ago, but now something happened and I don't know why. I'll be very grateful if you can help me. Thanks in advance.

The full error looks like this:

Fatal error: Class 'Memcache' not found in /srv/www/htdocs/modules/memcache/dmemcache.inc on line 177

1) php -m gives this:

[PHP Modules]
bz2
ctype
date
dom
filter
gd
hash
iconv
json
libxml
mbstring
mcrypt
mysql
mysqli
pcre
PDO
pdo_mysql
pdo_sqlite
Reflection session SimpleXML SPL SQLite standard sysvsem tokenizer xml xmlreader xmlwriter zip zlib

[Zend Modules] none

2) memcached is installed through package manager.

3) memcache module for drupal installed

what am I doing wrong? thx.

Answer 1

I convene with googletorp that the problem seems to rely on memcache installation. Try this:

#if apt-get, rpm, or yum doesn't work
cd /usr/src/
wget http://pecl.php.net/get/memcache-2.2.4.tgz
tar -zxvf memcached-2.2.4.tgz
cd memcached-2.2.4
phpize && ./configure --enable-memcache && make
cp modules/memcache.so /usr/lib/php/modules/

# Note: packaged extension modules are now loaded via the .ini files
# found in the directory /etc/php.d
touch /etc/php.d/memcached.ini
echo 'extension=memcache.so' > /etc/php.d/memcached.ini

service httpd restart

The above procedure has been brutally copied from the comments to the page of the official memecache documentation. It is dated 11.12.09.